Leakage detection device for special gas double-sleeve conveying

Abstract

The invention relates to the technical field of industrial safety, and discloses a special gas double-sleeve conveying leakage detection device which comprises a detection mechanism, the detection mechanism comprises an outer pipe, and a gas suction unit is arranged at the bottom end of the outer pipe. According to the leakage detection device for special gas double-sleeve conveying, a first supporting frame is tightly connected with a first mounting block through a bolt, an outer pipe is fixed to the inner wall of the first supporting frame, then a first motor drives a lead screw to rotate at a constant speed, a gas suction shell can smoothly slide on the surface of the first supporting frame under the cooperation of the lead screw and a sliding rail, and a gas suction groove which is elaborately formed is formed in the bottom end of the gas suction shell; a second motor is fixed in a groove through a first mounting frame, when the second motor is started, first fan blades are driven to rapidly rotate, air suction of a lower area is achieved, an air suction shell can orderly suck air along an outer pipe through accurate control of a first motor, and when special gas leaks and especially has harmfulness, the device can rapidly suck air, the safety of the detection device is remarkably improved, and the detection efficiency is improved. And a reliable guarantee is provided for smooth proceeding of related work.

Description

Technical Field

[0001] The invention relates to the technical field of industrial safety, and in particular to a leakage detection device for double-tube transportation of special gases. Background Art

[0002] With the development of modern industry, more and more factories and facilities need to use special gases, such as helium, hydrogen and other rare gases. These gases are usually high value, high compressibility, potential danger and other characteristics. In order to ensure the safety of gas during transportation and prevent environmental pollution, personal injury and economic losses caused by leakage, the use of double-tube structure to transport special gases has become an effective method. However, when facing leakage, traditional leak detection methods are often unable to deal with the leaked gas in time, resulting in the continuous diffusion of the leaked gas. In this way, the leaked gas may enter the surrounding environment and cause air pollution, which is difficult to meet actual needs.

[0003] Combining the above problems, it can be found that the existing gas double-tube transport leakage detection devices on the market are difficult to deal with the problem of special gas leakage when in use, and even if the problem can be solved, it needs to be solved through external tools, which makes it impossible to achieve the desired effect. Therefore, a special gas double-tube transport leakage detection device is proposed. Summary of the invention

[0004] The object of the present invention is to provide a leakage detection device for double-tube transportation of special gases to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a leakage detection device for double-tube transportation of special gases, comprising a detection mechanism, the detection mechanism comprising an outer tube, and a suction unit is arranged at the bottom end of the outer tube; An exhaust gas treatment unit is provided on the surface of the air intake unit; The suction unit comprises a support seat 1, the top of the support seat 1 is fixedly connected to a support frame 1, the end of the support frame 1 away from the support seat 1 is threadedly connected to a mounting block 1, the inner wall of the mounting block 1 is rotatably connected to a lead screw, the surface of the mounting block 1 is fixedly connected to a slide rail, the surface of the slide rail is slidably connected to an suction shell, the bottom end of the suction shell is provided with an suction groove, the inner wall of the suction groove is fixedly connected to a mounting frame 1, the surface of the mounting frame 1 is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a fan blade 1, the end of the lead screw away from the mounting block 1 is rotatably connected to a mounting block 2, the end of the mounting block 2 away from the lead screw is fixedly connected to the first motor, the bottom end of the mounting block 2 is threadedly connected to a support frame 2, and the end of the support frame 2 away from the mounting block 2 is fixedly connected to a support seat 2.

[0006] A support frame is connected to a mounting block by bolts so that the outer tube is fixed to the inner wall of the support frame, and the first motor drives the lead screw to rotate so that the air suction shell slides on the surface of the lead screw and the slide rail. An air suction groove is provided at the bottom of the air suction shell, and a second motor is fixed in the air suction groove by a mounting frame. The fan blade is driven by the second motor to rotate to suction air from below, and the first motor can make the air suction shell suck air along the outer tube. When special gas leaks, the special gas can be sucked in. When the special gas is harmful, the safety of the detection device is improved.

[0007] As a preferred implementation, one end of the slide rail away from the first mounting block is fixedly connected to the second mounting block, and the surface of the lead screw is threadedly connected to the air intake housing.

[0008] The threaded connection has good self-locking and tightness, which can effectively prevent the air intake housing from loosening or displacement when the screw rotates. This connection method can ensure that the air intake housing moves accurately in a straight line under the drive of the screw, thereby achieving effective absorption and transportation of special gases.

[0009] As a preferred embodiment, one end of the lead screw away from the mounting block one passes through the mounting block two and is fixedly connected to the output end of the first motor.

[0010] After the connection is completed, the lead screw can rotate smoothly and efficiently under the drive of the first motor, thereby driving the relevant components to achieve the expected movement and function.

[0011] As a preferred embodiment, the bottom end of the outer tube is fixedly connected to the first support frame, and the bottom of one end of the outer tube away from the first support frame is fixedly connected to the second support frame.

[0012] The bottom end of the outer tube is firmly fixedly connected to the support frame 1 by a firm connection method. This connection has been carefully designed and implemented to ensure that the outer tube can be reliably supported at the bottom and will not easily shake or move. At the same time, the bottom of the end of the outer tube away from the support frame 1 is also fixedly connected to the support frame 2 in the same firm manner. This connection enables the other end of the outer tube to obtain solid support, further enhancing the overall stability of the outer tube.

[0013] As a preferred embodiment, the exhaust gas treatment unit includes a connecting pipe, the outer side of the connecting pipe is fixedly connected to a gas collecting tank, the bottom end of the gas collecting tank is fixedly connected to a mounting pipe, the inner wall of the mounting pipe is threadedly connected to a processing container, the inner wall of the gas collecting tank is fixedly connected to a mounting frame 2, the surface of the mounting frame 2 is fixedly connected to a third motor, and the output end of the third motor is fixedly connected to a fan blade 2.

[0014] When the suction shell completes the suction, the special gas can be sucked into the gas collecting tank through the connecting pipe. The inner wall of the mounting pipe arranged at the bottom of the gas collecting tank is provided with threads, which are connected to the processing container through the threads. The third motor arranged on the surface of the second mounting frame on the inner wall of the gas collecting tank drives the fan blade 2 to lead the absorbed special gas into the processing container. A catalyst or solution corresponding to the special gas can be placed inside the processing container to catalyze or absorb the special gas, so that the special gas is rendered harmless through chemical reactions.

[0015] As a preferred embodiment, one end of the connecting pipe away from the gas collecting tank is fixedly connected to the air intake shell.

[0016] This fixed connection method can effectively ensure that the gas is smoothly transmitted from the air intake shell to the gas collecting tank, thereby realizing the collection and processing of special gases.

[0017] As a preferred embodiment, both ends of the outer tube are fixedly connected with closing rings, the inner wall of the closing ring is fixedly connected with the inner tube, the surface of the outer tube is fixedly connected with a sliding sleeve, the surface of the inner tube is slidably connected with a spring, the surface of the outer tube is provided with a side tube, the surface of the side tube is fixedly connected with an isolation valve, and the end of the side tube away from the mounting block 2 is fixedly connected with a pressure sensor.

[0018] Both ends of the outer tube are fixedly connected to the tail rings, which connect the outer tube and the inner tube and provide good sealing. The surface of the outer tube is fixedly connected to the sliding sleeve to facilitate operation and improve efficiency. The surface of the inner tube is slidably connected to the spring to play a buffering role and extend the service life. A side tube is arranged on the surface of the outer tube, and the surface of the side tube is connected to the isolation valve, which can control the on and off to perform corresponding operations. The end of the side tube away from the mounting block 2 is connected to the pressure sensor, which can monitor the pressure changes in real time, help understand the working status of the system and ensure normal operation.

[0019] As a preferred implementation, two isolation valves are provided, and the two isolation valves are linearly arranged along the surface of the side pipe.

[0020] The linear arrangement makes the layout of the isolation valve more reasonable and compact, saving space and making it easier for operators to observe and operate.

[0021] Compared with the prior art, the beneficial effects achieved by the present invention are: First, in the actual use of the present invention, the support frame 1 is tightly connected with the mounting block 1 by means of bolts, so that the outer tube is firmly fixed in the inner wall of the support frame 1. On this basis, the first motor begins to play a role, which drives the lead screw to rotate at a uniform speed. Under the coordinated action of the lead screw and the slide rail, the air intake shell can slide smoothly on its surface. It is worth mentioning that an air intake groove is carefully opened at the bottom end of the air intake shell. Inside the air intake groove, the second motor is firmly fixed by the mounting frame 1. When the second motor starts, it will drive the fan blade 1 to rotate rapidly, thereby realizing the air intake operation of the lower area. Through the precise control of the first motor, the air intake shell can perform orderly air intake work along the outer tube. When facing the leakage of special gas, the device can quickly absorb the special gas, especially when the special gas is harmful. This function significantly improves the safety of the detection device and provides a reliable guarantee for the smooth progress of related work.

[0022] Second, after the air suction shell of the present invention successfully completes the air suction operation, it can smoothly transport the absorbed special gas to the gas collecting tank through the connecting pipe. The bottom end of the gas collecting tank is specially equipped with a mounting pipe. The inner wall of the mounting pipe has been carefully designed and provided with a delicate threaded structure. It is by virtue of this threaded structure that a firm and stable connection with the processing container can be achieved. At the inner wall of the gas collecting tank, through the strong support of the mounting frame 2, the third motor provided on its surface starts and runs. The third motor plays an important role. It drives the fan blade 2 to rotate at a uniform speed, and then guides the absorbed special gas to the interior of the processing container in an orderly manner. The interior of the processing container has corresponding conditions and can be placed with catalysts or solutions corresponding to the special gas. These carefully selected catalysts or solutions have the ability to efficiently catalyze or absorb the special gas. In this way, the special gas can be successfully converted into a harmless substance in the process of the chemical reaction, so as to achieve the purpose of completely eliminating the potential hazards of the special gas, further improve the safety and reliability of the entire system, and provide a solid guarantee for related operations and applications.

[0023] Third, when the present invention is in use, the inner tube and the outer tube are connected by a tail ring at both ends of the gas use point and the gas source point to achieve a sealing effect. First, the inner tube is subjected to normal welding operations, and the outer tube joint is covered with a sleeve to wait for subsequent welding work. Next, after the air tightness test of the inner tube is completed, the inner tube is pressure-maintained again, and then the outer tube sleeve is welded to connect the outer tubes. In this process, it is necessary to simultaneously observe whether there is a pressure change in the inner tube. After the welding of the outer tube sleeve is completed, nitrogen is filled into the outer tube and the pressure is maintained to detect the welding quality of the outer tube. Finally, the nitrogen in the inner tube is removed, and the outer tube is pumped to a negative pressure state using a He leak detector, and a pressure sensor is installed to complete the merger of the entire operation process. Through the above operation process, the sealing of the special gas double-tube conveying system can be effectively detected to ensure that there will be no gas leakage during the operation of the system, thereby ensuring the safe operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic top view of the overall structure of the present invention; Figure 2 It is a partial structural cross-sectional view of the present invention; Figure 3 It is a side schematic diagram of the overall structure of the present invention; Figure 4 It is a schematic diagram of the internal structure of part of the present invention; Figure 5 It is a bottom view schematic diagram of the overall structure of the present invention; Figure 6 This is a schematic diagram of the interior of the tail gas treatment unit of the present invention; Figure 7 It is a schematic diagram of the disassembly of part of the structure of the present invention.

[0025] Legend: 1. Detection mechanism; 10. Outer tube; 101. Inner tube; 102. Closing ring; 103. Isolation valve; 104. Pressure sensor; 105. Sliding sleeve; 106. Spring; 20, air suction unit; 201, support seat 1; 202, support frame 1; 203, mounting block 1; 204, lead screw; 205, slide rail; 206, first motor; 207, air suction housing; 208, air suction slot; 209, mounting frame 1; 210, second motor; 211, fan blade 1; 212, mounting block 2; 213, support frame 2; 214, support seat 2; 30. Exhaust gas treatment unit; 301. Connecting pipe; 302. Gas collecting tank; 303. Treatment container; 304. Mounting pipe; 305. Second fan blade; 306. Third motor; 307. Second mounting frame. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the present invention provides a technical solution: a leakage detection device for double-tube transportation of special gases, comprising a detection mechanism 1, the detection mechanism 1 comprises an outer tube 10, and a suction unit 20 is arranged at the bottom end of the outer tube 10; An exhaust gas treatment unit 30 is disposed on the surface of the air intake unit 20; The air suction unit 20 includes a support seat 201, the top of the support seat 201 is fixedly connected to a support frame 202, the end of the support frame 202 away from the support seat 201 is threadedly connected to a mounting block 203, the inner wall of the mounting block 203 is rotatably connected to a lead screw 204, the surface of the mounting block 203 is fixedly connected to a slide rail 205, the surface of the slide rail 205 is slidably connected to an air suction shell 207, the bottom end of the air suction shell 207 is provided with an air suction groove 208, the inner wall of the air suction groove 208 is fixedly connected to A mounting frame 209 is provided, and a second motor 210 is fixedly connected to the surface of the mounting frame 209, a fan blade 211 is fixedly connected to the output end of the second motor 210, an end of the lead screw 204 away from the mounting block 203 is rotatably connected to a mounting block 212, an end of the mounting block 212 away from the lead screw 204 is fixedly connected to the first motor 206, a bottom end of the mounting block 212 is threadedly connected to a support frame 213, and an end of the support frame 213 away from the mounting block 212 is fixedly connected to a support seat 214.

[0028] One end of the slide rail 205 away from the mounting block 1 203 is fixedly connected to the mounting block 212 , and the surface of the lead screw 204 is threadedly connected to the air suction housing 207 .

[0029] One end of the lead screw 204 away from the first mounting block 203 passes through the second mounting block 212 and is fixedly connected to the output end of the first motor 206 .

[0030] The bottom end of the outer tube 10 is fixedly connected to the support frame 1 202 , and the bottom of one end of the outer tube 10 away from the support frame 1 202 is fixedly connected to the support frame 2 213 .

[0031] The exhaust gas treatment unit 30 includes a connecting pipe 301, the outer side of the connecting pipe 301 is fixedly connected to a gas collecting tank 302, the bottom end of the gas collecting tank 302 is fixedly connected to a mounting pipe 304, the inner wall of the mounting pipe 304 is threadedly connected to a treatment container 303, the inner wall of the gas collecting tank 302 is fixedly connected to a mounting frame 2 307, the surface of the mounting frame 2 307 is fixedly connected to a third motor 306, and the output end of the third motor 306 is fixedly connected to a fan blade 2 305.

[0032] One end of the connecting pipe 301 away from the gas collecting tank 302 is fixedly connected to the air intake housing 207 .

[0033] The two ends of the outer tube 10 are fixedly connected with closing rings 102, the inner wall of the closing ring 102 is fixedly connected with the inner tube 101, the surface of the outer tube 10 is fixedly connected with a sliding sleeve 105, the surface of the inner tube 101 is slidably connected with a spring 106, the surface of the outer tube 10 is provided with a side tube, the surface of the side tube is fixedly connected with an isolation valve 103, and the end of the side tube away from the mounting block 212 is fixedly connected with a pressure sensor 104.

[0034] Two isolation valves 103 are provided, and the two isolation valves 103 are linearly arranged along the surface of the side pipe.

[0035] Working principle: In actual use, the support frame 202 is tightly connected to the mounting block 203 by means of bolts, so that the outer tube 10 is firmly fixed in the inner wall of the support frame 202. On this basis, the first motor 206 begins to play a role, which drives the lead screw 204 to rotate at a uniform speed. Under the coordinated action of the lead screw 204 and the slide rail 205, the air intake shell 207 can slide smoothly on its surface. It is worth mentioning that the bottom end of the air intake shell 207 is carefully provided with an air intake groove 208. Inside the air intake groove 208, the second motor 210 is firmly fixed by the mounting frame 209. When the second motor 210 is started, it will drive the fan blade 211 to rotate rapidly, thereby realizing the air intake operation of the lower area. Through the precise control of the first motor 206, the air intake shell 207 can rotate along the outer tube 10 The device can perform the suction work in an orderly manner. When faced with the leakage of special gas, the device can absorb the special gas around the entire pipeline through the reciprocating movement of the lead screw 204. Especially when the special gas is harmful, this function significantly improves the safety of the detection device and provides a reliable guarantee for the smooth progress of related work; In addition, after the suction shell 207 successfully completes the suction operation, it can smoothly transport the sucked special gas to the gas collecting tank 302 through the connecting pipe 301. The bottom end of the gas collecting tank 302 is specially equipped with a mounting pipe 304. This mounting pipe 304 is provided with a delicate threaded structure. It is by virtue of this threaded structure that a firm and stable connection with the processing container 303 can be achieved. At the inner wall of the gas collecting tank 302, through the strong support of the mounting frame 2 307, the third motor 306 arranged on its surface starts and runs. The third motor 306 plays an important role. It drives the fan blade 2 305 to rotate at a uniform speed, and then guides the absorbed special gas to the interior of the processing container 303 in an orderly manner. The interior of the processing container 303 has corresponding conditions, and a catalyst or solution corresponding to the special gas in the pipeline can be placed. For example, when there is chlorine in the pipeline, ammonia water can be used. The nitrogen generated after the interaction is generally harmless to the human body and the environment, and the generated hydrochloric acid remains in the processing container 303, which has the function of entering the special gas. The special gas can be successfully converted into harmless substances in the process of chemical reaction, so as to completely eliminate the potential hazards of the special gas, further improve the safety and reliability of the whole system, and provide a solid guarantee for related operations and applications. When in use, the inner tube 101 and the outer tube 10 are connected by the tail ring 102 at both ends of the gas use point and the gas source point to achieve a sealing effect. First, the inner tube 101 is welded normally. Operation, and the sleeve 105 is put on the joint of the outer tube 10, waiting for the subsequent welding work. Next, after the air tightness test of the inner tube 101 is completed, the inner tube 101 is pressure-maintained again, and then the sleeve 105 of the outer tube 10 is welded to connect the outer tube 10. In this process, it is necessary to simultaneously observe whether there is a pressure change in the inner tube 101. After the welding of the sleeve 105 of the outer tube 10 is completed, nitrogen is filled into the outer tube 10 and the pressure is maintained to detect the welding quality of the outer tube 10. Finally, the nitrogen in the inner tube 101 is removed, and the outer tube 10 is pumped to a negative pressure state using a He leak detector, and the pressure sensor 104 is installed to complete the merger of the entire operation process. Through the above operation process, the sealing of the special gas double-tube conveying system can be effectively detected to ensure that there will be no gas leakage during the operation of the system, thereby ensuring the safe operation of the system.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leakage detection device for double-tube transportation of special gases, comprising a detection mechanism (1), characterized in that: The detection mechanism (1) comprises an outer tube (10), and an air suction unit (20) is provided at the bottom end of the outer tube (10); An exhaust gas treatment unit (30) is provided on the surface of the air intake unit (20); The air suction unit (20) comprises a support seat 1 (201), the top end of the support seat 1 (201) is fixedly connected to a support frame 1 (202), one end of the support frame 1 (202) away from the support seat 1 (201) is threadedly connected to a mounting block 1 (203), the inner wall of the mounting block 1 (203) is rotatably connected to a lead screw (204), the surface of the mounting block 1 (203) is fixedly connected to a slide rail (205), the surface of the slide rail (205) is slidably connected to an air suction shell (207), the bottom end of the air suction shell (207) is provided with an air suction groove (208), the inner wall of the air suction groove (208) is fixedly connected to the inner wall of the lead screw (204), A mounting frame 1 (209) is connected, a second motor (210) is fixedly connected to the surface of the mounting frame 1 (209), an output end of the second motor (210) is fixedly connected to a fan blade 1 (211), an end of the lead screw (204) away from the mounting block 1 (203) is rotatably connected to a mounting block 2 (212), an end of the mounting block 2 (212) away from the lead screw (204) is fixedly connected to the first motor (206), a bottom end of the mounting block 2 (212) is threadedly connected to a support frame 2 (213), and an end of the support frame 2 (213) away from the mounting block 2 (212) is fixedly connected to a support seat 2 (214).

2. A leakage detection device for double-tube transportation of special gases according to claim 1, characterized in that: One end of the slide rail (205) away from the first mounting block (203) is fixedly connected to the second mounting block (212), and the surface of the lead screw (204) is threadedly connected to the air intake housing (207).

3. A leakage detection device for double-tube transportation of special gases according to claim 1, characterized in that: One end of the lead screw (204) away from the first mounting block (203) passes through the second mounting block (212) and is fixedly connected to the output end of the first motor (206).

4. A leakage detection device for double-tube transportation of special gases according to claim 1, characterized in that: The bottom end of the outer tube (10) is fixedly connected to the first support frame (202), and the bottom of one end of the outer tube (10) away from the first support frame (202) is fixedly connected to the second support frame (213).

5. A leakage detection device for double-tube transportation of special gases according to claim 1, characterized in that: The exhaust gas treatment unit (30) comprises a connecting pipe (301), the outer side of the connecting pipe (301) is fixedly connected to a gas collecting tank (302), the bottom end of the gas collecting tank (302) is fixedly connected to a mounting pipe (304), the inner wall of the mounting pipe (304) is threadedly connected to a treatment container (303), the inner wall of the gas collecting tank (302) is fixedly connected to a second mounting frame (307), the surface of the second mounting frame (307) is fixedly connected to a third motor (306), and the output end of the third motor (306) is fixedly connected to a second fan blade (305).

6. A leakage detection device for double-tube transportation of special gases according to claim 5, characterized in that: One end of the connecting pipe (301) away from the gas collecting tank (302) is fixedly connected to the air intake housing (207).

7. A leakage detection device for double-tube transportation of special gases according to claim 1, characterized in that: Both ends of the outer tube (10) are fixedly connected to closing rings (102), the inner wall of the closing ring (102) is fixedly connected to the inner tube (101), the surface of the outer tube (10) is fixedly connected to a sliding sleeve (105), the surface of the inner tube (101) is slidably connected to a spring (106), a side tube is provided on the surface of the outer tube (10), an isolation valve (103) is fixedly connected to the surface of the side tube, and one end of the side tube away from the second mounting block (212) is fixedly connected to a pressure sensor (104).

8. A leakage detection device for double-tube transportation of special gases according to claim 7, characterized in that: Two isolation valves (103) are provided, and the two isolation valves (103) are linearly arranged along the surface of the side pipe.

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